JPS579804A - Treatment for porosity reduction of sintered body - Google Patents
Treatment for porosity reduction of sintered bodyInfo
- Publication number
- JPS579804A JPS579804A JP8136080A JP8136080A JPS579804A JP S579804 A JPS579804 A JP S579804A JP 8136080 A JP8136080 A JP 8136080A JP 8136080 A JP8136080 A JP 8136080A JP S579804 A JPS579804 A JP S579804A
- Authority
- JP
- Japan
- Prior art keywords
- die
- sintered body
- punch
- cavities
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To reduce a porosity by inserting a sintered body into a die groove consisting of plural cavities and a lower punch rubbing against said cavities, rotating an upper punch slantingly in an upper face of the die groove, thereby compacting the sintered body through the lower and upper punches.
CONSTITUTION: A sintered body 1 has circular arc-shaped faces 2; in a die 3, cavities 3a having circular arc-shaped faces, corresponding to the cross section of the sintered body, pass through the die 3 at the same interval; and a lower punch 13 moves up and down in contact with the cavities 3a. The sintered bodies 1 are inserted into a die groove 15. Then an upper punch 18 having a right cone-shaped pressing surface 19 of the obtuse vertical-angle at a top part of a cylinder is rotated so as to slant its central axis on the upper face of the die groove 15, and the punch 13 is raised while rolling the surface 19 along the upper face of the die 3. Whereby, the bodies 1 in the groove 15 are pressed on the surface 19 of the punch 18, and compressing force is applied by said surface 19 locally and successively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8136080A JPS579804A (en) | 1980-06-18 | 1980-06-18 | Treatment for porosity reduction of sintered body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8136080A JPS579804A (en) | 1980-06-18 | 1980-06-18 | Treatment for porosity reduction of sintered body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS579804A true JPS579804A (en) | 1982-01-19 |
JPS6148565B2 JPS6148565B2 (en) | 1986-10-24 |
Family
ID=13744169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8136080A Granted JPS579804A (en) | 1980-06-18 | 1980-06-18 | Treatment for porosity reduction of sintered body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS579804A (en) |
-
1980
- 1980-06-18 JP JP8136080A patent/JPS579804A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6148565B2 (en) | 1986-10-24 |
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